ALSA: azt3328: Remove unnecessary synchronize_irq() before free_irq()

Calling synchronize_irq() right before free_irq() is quite useless. On one
hand the IRQ can easily fire again before free_irq() is entered, on the
other hand free_irq() itself calls synchronize_irq() internally (in a race
condition free way) before any state associated with the IRQ is freed.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/azt3328.c

@@ -2294,8 +2294,6 @@ snd_azf3328_free(struct snd_azf3328 *chip)
 	snd_azf3328_timer_stop(chip->timer);
 	snd_azf3328_gameport_free(chip);
 
-	if (chip->irq >= 0)
-		synchronize_irq(chip->irq);
 __end_hw:
 	if (chip->irq >= 0)
 		free_irq(chip->irq, chip);